Among a variety of chemical environmental factors that adversely affect the health of the population, especially dangerous are the heavy metals. The most widespread among them is lead. Numerous researches by scientists indicate the negative impact of this metal on health and, above all, on the health of the children's population. The purpose of the work is a comprehensive hygienic assessment of the content of the lead in environmental objects of an environmentally dangerous area and its impact on the health of children of preschool age. The studies on the content of lead in the air, drinking water, local food products in 2 industrial districts of the city of Dnipro and conditionally clean area have been conducted. Its total daily income in the body of preschool children who live in these areas has been calculated. Its content in the biosubstrates of these children (blood, hair, teeth and urine) has been determined. The obtained data made it expedient and necessary to develop and implement a set of measures, the aim of which is to reduce the external "stress" of this abiotic metal and to increase the resistance and adaptability of the child's body
